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Update time = Mon May 21 0:00:02 PDT 2012
Here are the earthquakes appearing on this map, most recent at top ...

 MAG    DATE    LOCAL-TIME  LAT     LON    DEPTH    LOCATION
        y/m/d     h:m:s     deg     deg     km

 1.2  2012/05/20 19:25:13 34.031N 117.350W  0.1    6 km ( 3 mi) NNE of Riverside, CA
 1.5  2012/05/20 16:24:40 35.021N 117.680W  2.3    4 km ( 2 mi) NW  of Boron, CA
 1.4  2012/05/20 09:21:05 34.247N 118.451W  3.8    3 km ( 2 mi) N   of Panorama City, CA
 1.9  2012/05/20 07:26:09 34.537N 118.785W 13.1   15 km (10 mi) W   of Castaic Lake dam, CA
 2.1  2012/05/20 06:29:32 34.523N 118.797W 12.8   16 km (10 mi) W   of Castaic Lake dam, CA
 1.6  2012/05/20 01:29:14 34.256N 117.016W  6.5   10 km ( 6 mi) NE  of Running Springs, CA
 1.2  2012/05/19 02:13:45 35.952N 117.644W  2.0   29 km (18 mi) ESE of Coso Junction, CA
 1.8  2012/05/19 01:58:38 35.769N 117.672W  1.1   16 km (10 mi) N   of Ridgecrest, CA
 2.3  2012/05/19 00:33:03 35.938N 117.642W  2.9   30 km (19 mi) ESE of Coso Junction, CA
 1.0  2012/05/18 18:59:41 35.941N 117.647W  2.8   29 km (18 mi) ESE of Coso Junction, CA
 0.7  2012/05/18 13:37:45 35.779N 117.655W  5.5   18 km (11 mi) N   of Ridgecrest, CA
 1.0  2012/05/18 13:24:23 35.517N 118.260W  8.6   23 km (14 mi) SE  of town of Lake Isabella, CA
 1.4  2012/05/18 09:30:52 34.005N 117.576W  9.8   10 km ( 6 mi) SE  of Ontario, CA
 2.0  2012/05/18 09:24:43 34.331N 117.279W 15.2   10 km ( 6 mi) SSE of Hesperia, CA
 0.4  2012/05/18 04:25:20 35.943N 117.701W  5.4   25 km (16 mi) ESE of Coso Junction, CA
 1.8  2012/05/18 04:17:39 35.949N 117.703W  4.2   24 km (15 mi) ESE of Coso Junction, CA
 0.8  2012/05/18 03:30:47 35.724N 118.473W  6.4   10 km ( 6 mi) N   of town of Lake Isabella, CA
 1.0  2012/05/18 02:55:35 35.517N 118.260W  7.0   23 km (14 mi) SE  of town of Lake Isabella, CA
 1.1  2012/05/18 00:34:30 35.510N 118.259W  5.1   23 km (15 mi) SE  of town of Lake Isabella, CA
 0.4  2012/05/17 23:25:14 35.944N 117.704W  3.5   25 km (15 mi) ESE of Coso Junction, CA
 1.2  2012/05/17 23:23:31 35.947N 117.701W  4.6   25 km (15 mi) ESE of Coso Junction, CA
 1.2  2012/05/17 19:32:11 35.509N 118.256W  8.4   24 km (15 mi) SE  of town of Lake Isabella, CA
 1.8  2012/05/17 19:22:49 35.509N 118.251W  7.3   24 km (15 mi) SE  of town of Lake Isabella, CA
 1.5  2012/05/17 19:21:17 35.513N 118.252W  8.6   24 km (15 mi) SE  of town of Lake Isabella, CA
 1.2  2012/05/17 18:18:48 35.519N 118.256W  5.6   23 km (14 mi) SE  of town of Lake Isabella, CA
 1.4  2012/05/17 18:16:43 35.512N 118.259W  7.9   23 km (15 mi) SE  of town of Lake Isabella, CA
 0.9  2012/05/17 11:38:19 35.510N 118.258W  7.0   24 km (15 mi) SE  of town of Lake Isabella, CA
 2.2  2012/05/17 10:32:36 34.865N 118.779W  0.0   10 km ( 6 mi) NE  of Gorman, CA
 1.3  2012/05/17 10:16:00 35.509N 118.254W  7.6   24 km (15 mi) SE  of town of Lake Isabella, CA
 1.4  2012/05/17 09:01:37 35.152N 118.412W  0.0    4 km ( 2 mi) NE  of Tehachapi, CA
 1.7  2012/05/16 11:07:22 34.620N 117.124W  0.0   18 km (11 mi) ENE of Victorville, CA
 1.9  2012/05/16 10:25:23 35.040N 117.674W  0.0    5 km ( 3 mi) NNW of Boron, CA
 1.3  2012/05/16 07:10:22 34.046N 117.527W 17.3    9 km ( 6 mi) SE  of Rancho Cucamonga, CA
 0.9  2012/05/16 06:23:03 35.520N 118.256W  7.8   23 km (14 mi) SE  of town of Lake Isabella, CA
 1.0  2012/05/15 22:16:09 35.507N 118.264W  8.4   23 km (14 mi) SE  of town of Lake Isabella, CA
 1.0  2012/05/15 20:00:29 35.512N 118.263W  8.3   23 km (14 mi) SE  of town of Lake Isabella, CA
 1.4  2012/05/15 19:53:54 35.508N 118.257W  9.0   24 km (15 mi) SE  of town of Lake Isabella, CA
 1.2  2012/05/15 19:40:40 35.509N 118.257W  8.6   24 km (15 mi) SE  of town of Lake Isabella, CA
 0.9  2012/05/15 19:34:56 35.514N 118.264W  7.1   23 km (14 mi) SE  of town of Lake Isabella, CA
 1.3  2012/05/15 19:28:44 35.509N 118.256W  7.9   24 km (15 mi) SE  of town of Lake Isabella, CA
 0.2  2012/05/15 16:37:16 35.959N 117.611W  7.0   30 km (19 mi) NW  of Trona, CA
 1.3  2012/05/15 14:52:38 34.093N 117.452W  4.7    2 km ( 1 mi) SW  of Fontana, CA
 1.4  2012/05/15 11:00:04 35.047N 118.324W  0.0   14 km ( 9 mi) W   of Mojave, CA
 0.6  2012/05/15 01:31:55 35.981N 117.916W  3.9    8 km ( 5 mi) SSE of Coso Junction, CA
 1.2  2012/05/15 01:02:14 35.895N 118.357W  2.0   26 km (16 mi) E   of Pine Flat, CA
 0.9  2012/05/14 20:52:05 35.764N 117.996W 11.3   32 km (20 mi) S   of Coso Junction, CA
 0.4  2012/05/14 17:39:12 35.973N 117.681W  2.6   25 km (16 mi) ESE of Coso Junction, CA
 1.5  2012/05/14 17:13:21 35.044N 117.682W  0.0    6 km ( 4 mi) NNW of Boron, CA
 1.5  2012/05/14 11:51:09 34.062N 117.851W 10.0    5 km ( 3 mi) SE  of Covina, CA
 0.4  2012/05/14 08:57:23 35.898N 117.666W  2.4   30 km (19 mi) ESE of Coso Junction, CA
 1.1  2012/05/14 05:59:41 34.322N 117.080W  2.8   13 km ( 8 mi) NE  of Lake Arrowhead, CA

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Data Sources

Northern California - USGS = U.S. Geological Survey, Menlo Park
Northern California - UCB = University of California, Berkeley
Southern California - USGS = U.S. Geological Survey, Pasadena
Southern California - Caltech = California Institute of Technology
Southern California - UCSD = University of California, San Diego
Nevada - UNR = University of Nevada, Reno
US and World - USGS/NEIC = National Earthquake Information Center
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)